[time-nuts] Thunderbolt stability and ambient temperature

Lux, James P james.p.lux at jpl.nasa.gov
Wed Jun 10 09:12:04 EDT 2009




On 6/10/09 1:15 AM, "Magnus Danielson" <magnus at rubidium.dyndns.org> wrote:
> 
> 
> Nobody having a thermal inductive material around? That would be very
> usefull to handle temperature shifts.

Let's see.. If heat flow (watts) is the analog of current (Amps), and delta
T is the analog of voltage, what would a thermal inductor be... It would
have to have a delta T that is proportional to the rate of change of heat
flow.  A tough concept to wrap my early morning before coffee brain around..

BTW There are "thermal batteries" which contain a phase change material,
like wax, in them, but just like real batteries they're more analogous to a
capacitor.

One could  synthesize a thermal inductor with an active device (e.g. A heat
pump of some sort), just as one can synthesize an inductor with a op amp and
Rs and Cs (and some externally supplied energy)





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